König, MartinMartinKönig2022-03-082022-03-082019https://publica.fraunhofer.de/handle/publica/312118A method for producing a PUF-film comprises printing a layer of dielectric material on a film substrate, such that a variable thickness of the layer is obtained by the printing. The method comprises arranging a structured electrode layer on the dielectric material such that the structured electrode layer is influenced with respect to an electric measurement value due to the variable thickness.en621patent3550623